COMPORTEMENT DYNAMIQUE D'UNE NUANCE DE BERYLLIUM

D. MONTOYA; G. NAULIN; J.P. ANSART

doi:doi:10.1051/jp4:1991304

Numéro		J. Phys. IV France Volume 01, Numéro C3, Octobre 1991 DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		C3-27 - C3-34
DOI		https://doi.org/10.1051/jp4:1991304

DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading

J. Phys. IV France 01 (1991) C3-27-C3-34
DOI: 10.1051/jp4:1991304

COMPORTEMENT DYNAMIQUE D'UNE NUANCE DE BERYLLIUM

D. MONTOYA, G. NAULIN et J.P. ANSART

Commissariat à l'Énergie Atomique, Centre d'Études de Bruyères le Châtel, BP. 12, F-91680 Bruyères-le-Châtel, France

Abstract
We have developed an elastic viscoplastic model for beryllium, which can be easily incorporated into a computer code. The form of the equation is next to Steinberg, Cochran and Guinan's model. The influence of temperature and strain rate is taken into account in the expressions of the elastic limit and the stress hardening function. The equation is settled from quasi static and dynamic compression tests. It can be then extrapolated over a wide range of stress, strain, strain rate and temperature. This allows to successfully calculate impacted sample profiles, as well as shock wave profiles.